SCI 221 PHYSIOLOGY 2026 ACTUAL EXAM QUESTIONS
AND SOLUTIONS RATED A+
✔✔Which is not true about the sodium and potassium pump? - ✔✔Sodium moves into
the cell and potassium moves out of the cell.
✔✔A sequence of three bases forms a(n): - ✔✔codon
✔✔The correct order of the phases of mitosis is: - ✔✔prophase, metaphase, anaphase,
telophase
✔✔Phagocytosis is an example of: - ✔✔endocytosis
✔✔Diffusion requires - ✔✔concentration gradient
✔✔All of the following are examples of passive transport except: - ✔✔endocytosis
✔✔Two solutions of different concentrations of glucose are separated by a membrane
that allows both glucose and water to pass through. When dynamic equilibrium is
reached, there will be: - ✔✔an even exchange of material across the membrane.
✔✔Extensive weight training causes the muscle cells to: - ✔✔hypertrophy
✔✔The small water channels in the cell membrane are called: - ✔✔aquaporins
✔✔Which of the following statements is true? - ✔✔The site of transcription is within the
nucleus, whereas the site of translation is in the cytoplasm.
✔✔Materials can be moved from a low concentration to a high concentration through: -
✔✔active transport.
✔✔Transcription can be best described as the: - ✔✔synthesis of mRNA
✔✔Which of the following terms is synonymous with tumor? - ✔✔Neoplasm
✔✔The pairing of bases of a strand of DNA is obligatory. If a strand of DNA were
composed of the base sequence of ATCG, what would be the obligatory sequence of its
opposing base pairs? - ✔✔TAGC
✔✔A DNA molecule is characterized by all of the following except: - ✔✔ribose sugar.
✔✔Diffusion of particles through a membrane by means of a carrier molecule is called: -
✔✔facilitated diffusion
, ✔✔A saline solution that contains a higher concentration of salt than a red blood cell
would be: - ✔✔hypertonic
✔✔If a sequence of nitrogen bases in nucleic acid were A-U-C-G-A, which of the
following would be true about the nucleic acid? - ✔✔It contains ribose sugar.
✔✔Water will move through the cell membrane by: - ✔✔osmosis
✔✔A membrane carrier structure attracts a solute to a binding site, changes shape, and
releases the solute on the other side of the cell membrane. This describes the process
of: - ✔✔carrier-mediated transport.
✔✔An individual's entire set of DNA can be referred to as a: - ✔✔genome
✔✔The physical process by which water and solute move through a membrane when a
hydrostatic pressure gradient exists across the membrane is the process of: -
✔✔filtration
✔✔ To accomplish self-regulation, a highly complex and integrated communication
control system or network is required. This type of network is called a(n) - ✔✔feedback
control loop.
✔✔Local control or _____, intrinsic mechanisms often make use of chemical signals. -
✔✔autoregulation
✔✔The impact of effector activity on sensors may be positive or negative. Therefore,
homeostatic control mechanisms are categorized as - ✔✔organs that are directly
influenced by physiological variables or mechanisms.
✔✔The normal reading or range is called the - ✔✔set point.
✔✔Events that lead to an immune response to an infection or the formation of a blood
clot are examples of - ✔✔positive feedback
✔✔The concept that information may flow ahead to another process to trigger a change
in anticipation of an event that will follow is called - ✔✔feed-forward.
✔✔Processes for maintaining or restoring homeostasis are known as - ✔✔homeostatic
control mechanisms.
✔✔Homeostatic Control Mechanisms - ✔✔receptor, control center, effector
AND SOLUTIONS RATED A+
✔✔Which is not true about the sodium and potassium pump? - ✔✔Sodium moves into
the cell and potassium moves out of the cell.
✔✔A sequence of three bases forms a(n): - ✔✔codon
✔✔The correct order of the phases of mitosis is: - ✔✔prophase, metaphase, anaphase,
telophase
✔✔Phagocytosis is an example of: - ✔✔endocytosis
✔✔Diffusion requires - ✔✔concentration gradient
✔✔All of the following are examples of passive transport except: - ✔✔endocytosis
✔✔Two solutions of different concentrations of glucose are separated by a membrane
that allows both glucose and water to pass through. When dynamic equilibrium is
reached, there will be: - ✔✔an even exchange of material across the membrane.
✔✔Extensive weight training causes the muscle cells to: - ✔✔hypertrophy
✔✔The small water channels in the cell membrane are called: - ✔✔aquaporins
✔✔Which of the following statements is true? - ✔✔The site of transcription is within the
nucleus, whereas the site of translation is in the cytoplasm.
✔✔Materials can be moved from a low concentration to a high concentration through: -
✔✔active transport.
✔✔Transcription can be best described as the: - ✔✔synthesis of mRNA
✔✔Which of the following terms is synonymous with tumor? - ✔✔Neoplasm
✔✔The pairing of bases of a strand of DNA is obligatory. If a strand of DNA were
composed of the base sequence of ATCG, what would be the obligatory sequence of its
opposing base pairs? - ✔✔TAGC
✔✔A DNA molecule is characterized by all of the following except: - ✔✔ribose sugar.
✔✔Diffusion of particles through a membrane by means of a carrier molecule is called: -
✔✔facilitated diffusion
, ✔✔A saline solution that contains a higher concentration of salt than a red blood cell
would be: - ✔✔hypertonic
✔✔If a sequence of nitrogen bases in nucleic acid were A-U-C-G-A, which of the
following would be true about the nucleic acid? - ✔✔It contains ribose sugar.
✔✔Water will move through the cell membrane by: - ✔✔osmosis
✔✔A membrane carrier structure attracts a solute to a binding site, changes shape, and
releases the solute on the other side of the cell membrane. This describes the process
of: - ✔✔carrier-mediated transport.
✔✔An individual's entire set of DNA can be referred to as a: - ✔✔genome
✔✔The physical process by which water and solute move through a membrane when a
hydrostatic pressure gradient exists across the membrane is the process of: -
✔✔filtration
✔✔ To accomplish self-regulation, a highly complex and integrated communication
control system or network is required. This type of network is called a(n) - ✔✔feedback
control loop.
✔✔Local control or _____, intrinsic mechanisms often make use of chemical signals. -
✔✔autoregulation
✔✔The impact of effector activity on sensors may be positive or negative. Therefore,
homeostatic control mechanisms are categorized as - ✔✔organs that are directly
influenced by physiological variables or mechanisms.
✔✔The normal reading or range is called the - ✔✔set point.
✔✔Events that lead to an immune response to an infection or the formation of a blood
clot are examples of - ✔✔positive feedback
✔✔The concept that information may flow ahead to another process to trigger a change
in anticipation of an event that will follow is called - ✔✔feed-forward.
✔✔Processes for maintaining or restoring homeostasis are known as - ✔✔homeostatic
control mechanisms.
✔✔Homeostatic Control Mechanisms - ✔✔receptor, control center, effector
